docs: def jsmin_for_posers(script, keep_bang_comments=False):
      r"""
      Minify javascript based on `jsmin.c by Douglas Crockford`_\.
  
      Instead of parsing the stream char by char, it uses a regular
      expression approach which minifies the whole script with one big
      substitution regex.
  
      .. _jsmin.c by Douglas Crockford:
         http://www.crockford.com/javascript/jsmin.c
  
      :Warning: This function is the digest of a _make_jsmin() call. It just
                utilizes the resulting regexes. It's here for fun and may
                vanish any time. Use the `jsmin` function instead.
  
      :Parameters:
        `script` : ``str``
          Script to minify
  
        `keep_bang_comments` : ``bool``
          Keep comments starting with an exclamation mark? (``/*!...*/``)
  
      :Return: Minified script
      :Rtype: ``str``
      """
      if not keep_bang_comments:
          rex = (
              r'([^\047"/\000-\040]+)|((?:(?:\047[^\047\\\r\n]*(?:\\(?:[^\r\n]'
              r'|\r?\n|\r)[^\047\\\r\n]*)*\047)|(?:"[^"\\\r\n]*(?:\\(?:[^\r\n]'
              r'|\r?\n|\r)[^"\\\r\n]*)*"))[^\047"/\000-\040]*)|(?<=[(,=:\[!&|?'
              r'{};\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*'
              r'][^*]*\*+)*/))*(?:(?:(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\0'
              r'14\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*)*((?:/(?![\r'
              r'\n/*])[^/\\\[\r\n]*(?:(?:\\[^\r\n]|(?:\[[^\\\]\r\n]*(?:\\[^\r'
              r'\n][^\\\]\r\n]*)*\]))[^/\\\[\r\n]*)*/)[^\047"/\000-\040]*)|(?<'
              r'=[\000-#%-,./:-@\[-^`{-~-]return)(?:[\000-\011\013\014\016-\04'
              r'0]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*(?:(?:(?://[^\r\n]*)?['
              r'\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^'
              r'*]*\*+)*/)))*((?:/(?![\r\n/*])[^/\\\[\r\n]*(?:(?:\\[^\r\n]|(?:'
              r'\[[^\\\]\r\n]*(?:\\[^\r\n][^\\\]\r\n]*)*\]))[^/\\\[\r\n]*)*/)['
              r'^\047"/\000-\040]*)|(?<=[^\000-!#%&(*,./:-@\[\\^`{|~])(?:[\000'
              r'-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*(?'
              r':((?:(?://[^\r\n]*)?[\r\n]))(?:[\000-\011\013\014\016-\040]|(?'
              r':/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*)+(?=[^\000-\040"#%-\047)*,.'
              r'/:-@\\-^`|-~])|(?<=[^\000-#%-,./:-@\[-^`{-~-])((?:[\000-\011\0'
              r'13\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?=[^\00'
              r'0-#%-,./:-@\[-^`{-~-])|(?<=\+)((?:[\000-\011\013\014\016-\040]'
              r'|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?=\+)|(?<=-)((?:[\000-'
              r'\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?'
              r'=-)|(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]'
              r'*\*+)*/))+|(?:(?:(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\014\0'
              r'16-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*)+'
          )
  
          def subber(match):
              """ Substitution callback """
              groups = match.groups()
              return (
                  groups[0] or
                  groups[1] or
                  groups[2] or
                  groups[3] or
                  (groups[4] and '\n') or
                  (groups[5] and ' ') or
                  (groups[6] and ' ') or
                  (groups[7] and ' ') or
                  ''
              )
      else:
          rex = (
              r'([^\047"/\000-\040]+)|((?:(?:\047[^\047\\\r\n]*(?:\\(?:[^\r\n]'
              r'|\r?\n|\r)[^\047\\\r\n]*)*\047)|(?:"[^"\\\r\n]*(?:\\(?:[^\r\n]'
              r'|\r?\n|\r)[^"\\\r\n]*)*"))[^\047"/\000-\040]*)|((?:/\*![^*]*\*'
              r'+(?:[^/*][^*]*\*+)*/)[^\047"/\000-\040]*)|(?<=[(,=:\[!&|?{};\r'
              r'\n])(?:[\000-\011\013\014\016-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*'
              r'][^*]*\*+)*/))*(?:(?:(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\0'
              r'14\016-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/))*)*((?:/('
              r'?![\r\n/*])[^/\\\[\r\n]*(?:(?:\\[^\r\n]|(?:\[[^\\\]\r\n]*(?:'
              r'\\[^\r\n][^\\\]\r\n]*)*\]))[^/\\\[\r\n]*)*/)[^\047"/\000-\040]'
              r'*)|(?<=[\000-#%-,./:-@\[-^`{-~-]return)(?:[\000-\011\013\014\0'
              r'16-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/))*(?:(?:(?://['
              r'^\r\n]*)?[\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*(?!!)[^*'
              r']*\*+(?:[^/*][^*]*\*+)*/)))*((?:/(?![\r\n/*])[^/\\\[\r\n]*(?:('
              r'?:\\[^\r\n]|(?:\[[^\\\]\r\n]*(?:\\[^\r\n][^\\\]\r\n]*)*\]))[^/'
              r'\\\[\r\n]*)*/)[^\047"/\000-\040]*)|(?<=[^\000-!#%&(*,./:-@\[\\'
              r'^`{|~])(?:[\000-\011\013\014\016-\040]|(?:/\*(?!!)[^*]*\*+(?:['
              r'^/*][^*]*\*+)*/))*(?:((?:(?://[^\r\n]*)?[\r\n]))(?:[\000-\011'
              r'\013\014\016-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/))*)+'
              r'(?=[^\000-\040"#%-\047)*,./:-@\\-^`|-~])|(?<=[^\000-#%-,./:-@'
              r'\[-^`{-~-])((?:[\000-\011\013\014\016-\040]|(?:/\*(?!!)[^*]*\*'
              r'+(?:[^/*][^*]*\*+)*/)))+(?=[^\000-#%-,./:-@\[-^`{-~-])|(?<=\+)'
              r'((?:[\000-\011\013\014\016-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*][^'
              r'*]*\*+)*/)))+(?=\+)|(?<=-)((?:[\000-\011\013\014\016-\040]|(?:'
              r'/\*(?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?=-)|(?:[\000-\011\013'
              r'\014\016-\040]|(?:/\*(?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/))+|(?:(?'
              r':(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*('
              r'?!!)[^*]*\*+(?:[^/*][^*]*\*+)*/))*)+'
          )
  
          def subber(match):
              """ Substitution callback """
              groups = match.groups()
              return (
                  groups[0] or
                  groups[1] or
                  groups[2] or
                  groups[3] or
                  groups[4] or
                  (groups[5] and '\n') or
                  (groups[6] and ' ') or
                  (groups[7] and ' ') or
                  (groups[8] and ' ') or
                  ''
              )
  
      return _re.sub(rex, subber, '\n%s\n' % script).strip()